Manifold Approximating Graph Interpolation of Cardiac Local Activation Time.

ABSTRACT:

Objective

Local activation time (LAT) mapping of cardiac chambers is vital for targeted treatment of cardiac arrhythmias in catheter ablation procedures. Current methods require too many LAT observations for an accurate interpolation of the necessarily sparse LAT signal extracted from intracardiac electrograms (EGMs). Additionally, conventional performance metrics for LAT interpolation algorithms do not accurately measure the quality of interpolated maps. We propose, first, a novel method for spatial interpolation of the LAT signal which requires relatively few observations; second, a realistic sub-sampling protocol for LAT interpolation testing; and third, a new color-based metric for evaluation of interpolation quality that quantifies perceived differences in LAT maps.

Methods

SUBMITTER: Hellar J 

PROVIDER: S-EPMC9549513 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature